... 180mm We can supply various brake shoe for trucks, semi-trailers. Produce brake parts similar like brake drum,brake lining,brake air chamber,slack adjust, ... 7.HJ wheel hub and brake drum use the international standard material of ball iron and gray iron separately, which has the ... various camshafts for trucks, semi-trailer parts.2,produce Brake drum, Brake shoe and other spare parts.3,BPW standard.